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Model 9110T NOx Analyzer Setup Menu
Teledyne Analytical Instruments 102
5.4.3.3. SETUP RNGE MODE AUTO: Configuring the 9110T Analyzer for Auto
Range Mode
In AUTO range mode, the analyzer automatically switches the reporting range between two
user-defined ranges (LOW and HIGH). The same low and high span settings are applied equally to
NO, NO
2
and NO
X
readings.
The unit will switch from LOW range to HIGH range when either the NO, or NO
X
concentration
exceeds 98% of the low range span.
The unit will return from HIGH range back to LOW range once both the NO and NO
X
concentrations
fall below 75% of the low range span.
IMPORTANT
IMPACT ON READINGS OR DATA
The LOW & HIGH ranges referred to here are NOT the same as the low &
high physical ranges referred to in Section 5.4.1.
Also the RANGE test function displayed on the front panel will be replaced by two separate functions:
RANGE1: The LOW range setting for all analog outputs.
RANGE2: The HIGH range setting for all analog outputs.
The LOW/HIGH range status is also reported through the external, digital status bits (Section 3.3.1.4).
To set individual ranges press the following menu sequence.